\chapter{Goals}

We set our goals in two categories. One that were needed to be able to use the bicycle computer at all, the compulsory features, and other features that would be nice to have. As we couldn't estimate in the beginning what would be feasible and what not, we wanted to decide which later features will be implemented.
\section{Compulsory features}
The bicycle computer should be able to...
\begin{itemize}
\item show the speed
\item show the distance
\item show an average speed
\item have a two-button user-interface (change display and reset)
\end{itemize}

\section{Optional features}
The bicycle computer could also...
\begin{itemize}
\item have an on line adjustable wheel size (wheel circumference)
\item have an extra distance and av. speed counter/display (e.g. for the trip)
\item be designed to be energy saving (sleep)
\item change the frequency counting mode (time counting and pulse counting)
\item estimate power with the help of an tilt sensor (inclinometer, realized with an accelerometer)
\item computer connection for data transfer
\item longtime storage of data (in eeprom)
\end{itemize}

\section{Specifications}
\label{sec:goalspecs}
The bicycle computers should measure:
\begin{itemize}
\item speed from $0$ to $100 \frac{km} h$
\item distances from $0$ to $99999.9$ $km$
\item time from $0$ to $65000$ $h$ (also needed for average speed)
\end{itemize}